|
|
Registro Completo |
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
22/06/2010 |
Data da última atualização: |
14/06/2011 |
Tipo da produção científica: |
Artigo de Divulgação na Mídia |
Autoria: |
VALLE, C. B. do. |
Afiliação: |
CACILDA BORGES DO VALLE, CNPGC. |
Título: |
Apomixia e a reprodução nas gramíneas forrageiras. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Portal Dia de Campo, 2010. Disponível em: . Acesso em: 14 maio 2010. |
Páginas: |
2 p. |
Idioma: |
Português |
Thesagro: |
Apomixia; Gramínea Forrageira; Pastagem; Reprodução. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00569naa a2200169 a 4500 001 1855923 005 2011-06-14 008 2010 bl --- 0-- u #d 100 1 $aVALLE, C. B. do 245 $aApomixia e a reprodução nas gramíneas forrageiras. 260 $c2010 300 $a2 p. 650 $aApomixia 650 $aGramínea Forrageira 650 $aPastagem 650 $aReprodução 773 $tPortal Dia de Campo, 2010. Disponível em: <http://www.diadecampo.com.br/zpublisher/materias/Materia.asp?id=21714&secao=Colunas%20Assinadas>. Acesso em: 14 maio 2010.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
12/12/2012 |
Data da última atualização: |
19/06/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
OLIVEIRA, D. E.; GAMA, M. A. S. da; FERNANDES, D.; TEDESCHI, L. O.; BAUMAN, D. E. |
Afiliação: |
D. E. OLIVEIRA, UESC; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; D. FERNANDES, UESC; L. O. TEDESCHI, UNIVERSIDADE DO TEXAS; D. E. BAUMAN, CORNELL. |
Título: |
An unprotected conjugated linoleic acid supplement decreases milk production and secretion of milk components in grazing dairy ewes. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
Journal of Dairy Science, v. 95, n. 3, p. 1437-1446, 2012. |
DOI: |
https://doi.org/10.3168/jds.2011-4618 |
Idioma: |
Inglês |
Conteúdo: |
Feeding conjugated linoleic acid (CLA) in a rumen-inert form to dairy ewes has been shown to increase milk production, alter milk composition, and increase the milk fat CLA content. However, few studies have tested ruminally unprotected CLA sources. The objective of this study was to evaluate the effects of an unprotected CLA supplement (29.8% of cis-9,trans-11 and 29.9% of trans-10,cis-12 isomers as methyl esters) on milk yield and composition of dairy ewes. Twenty-four lactating Lacaune ewes were used in a crossover design and received 2 dietary treatments: (1) control: basal diet containing no supplemental lipid and (2) basal diet plus CLA (30 g/d). The CLA supplement was mixed into the concentrate and fed in 2 equal meals after morning and afternoon milkings. Each experimental period consisted of 21 d: 7 d for adaptation and 14 d for data collection. The CLA supplement decreased milk fat content and yield by 31.3 and 38.0%, respectively. Milk yield and secretion of milk lactose and protein were decreased by 8.0, 9.8, and 5.6%, respectively. On the other hand, milk protein content and linear SCC score were 1.8 and 17.7% higher in ewes fed the CLA supplement. The concentration of milk fatty acids originating from de novo synthesis (C16) was increased by 22.6% in ewes fed the CLA supplement. The CLA supplement decreased C14:1/C14:0, C16:1/C16:0, and C18:1/C18:0 desaturase indexes by 25, 18.7, and 0.1%, respectively, but increased the cis-9,trans-11 CLA/trans-11 C18:1 ratio by 8.6%. The concentrations of trans-10,cis-12 CLA and cis-9,trans-11 CLA in milk fat was 309 and 33.4% higher in ewes fed CLA. Pronounced milk fat depression coupled with the deleterious effects on milk yield, milk SCC, and secretion of all milk solids observed in ewes fed an unprotected CLA supplement is likely to be associated with high doses of trans-10,cis-12 CLA reaching the mammary gland, corroborating previous results obtained with dairy cows. MenosFeeding conjugated linoleic acid (CLA) in a rumen-inert form to dairy ewes has been shown to increase milk production, alter milk composition, and increase the milk fat CLA content. However, few studies have tested ruminally unprotected CLA sources. The objective of this study was to evaluate the effects of an unprotected CLA supplement (29.8% of cis-9,trans-11 and 29.9% of trans-10,cis-12 isomers as methyl esters) on milk yield and composition of dairy ewes. Twenty-four lactating Lacaune ewes were used in a crossover design and received 2 dietary treatments: (1) control: basal diet containing no supplemental lipid and (2) basal diet plus CLA (30 g/d). The CLA supplement was mixed into the concentrate and fed in 2 equal meals after morning and afternoon milkings. Each experimental period consisted of 21 d: 7 d for adaptation and 14 d for data collection. The CLA supplement decreased milk fat content and yield by 31.3 and 38.0%, respectively. Milk yield and secretion of milk lactose and protein were decreased by 8.0, 9.8, and 5.6%, respectively. On the other hand, milk protein content and linear SCC score were 1.8 and 17.7% higher in ewes fed the CLA supplement. The concentration of milk fatty acids originating from de novo synthesis (C16) was increased by 22.6% in ewes fed the CLA supplement. The CLA supplement decreased C14:1/C14:0, C16:1/C16:0, and C18:1/C18:0 des... Mostrar Tudo |
Palavras-Chave: |
Depressão de gordura do leite; Ovelha lacaune; Produção de leite. |
Thesagro: |
Glândula Mamaria. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02841naa a2200229 a 4500 001 1942248 005 2024-06-19 008 2012 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3168/jds.2011-4618$2DOI 100 1 $aOLIVEIRA, D. E. 245 $aAn unprotected conjugated linoleic acid supplement decreases milk production and secretion of milk components in grazing dairy ewes.$h[electronic resource] 260 $c2012 520 $aFeeding conjugated linoleic acid (CLA) in a rumen-inert form to dairy ewes has been shown to increase milk production, alter milk composition, and increase the milk fat CLA content. However, few studies have tested ruminally unprotected CLA sources. The objective of this study was to evaluate the effects of an unprotected CLA supplement (29.8% of cis-9,trans-11 and 29.9% of trans-10,cis-12 isomers as methyl esters) on milk yield and composition of dairy ewes. Twenty-four lactating Lacaune ewes were used in a crossover design and received 2 dietary treatments: (1) control: basal diet containing no supplemental lipid and (2) basal diet plus CLA (30 g/d). The CLA supplement was mixed into the concentrate and fed in 2 equal meals after morning and afternoon milkings. Each experimental period consisted of 21 d: 7 d for adaptation and 14 d for data collection. The CLA supplement decreased milk fat content and yield by 31.3 and 38.0%, respectively. Milk yield and secretion of milk lactose and protein were decreased by 8.0, 9.8, and 5.6%, respectively. On the other hand, milk protein content and linear SCC score were 1.8 and 17.7% higher in ewes fed the CLA supplement. The concentration of milk fatty acids originating from de novo synthesis (<C16) was decreased by 25%, whereas the concentration of milk fatty acids taken up preformed from the plasma (>C16) was increased by 22.6% in ewes fed the CLA supplement. The CLA supplement decreased C14:1/C14:0, C16:1/C16:0, and C18:1/C18:0 desaturase indexes by 25, 18.7, and 0.1%, respectively, but increased the cis-9,trans-11 CLA/trans-11 C18:1 ratio by 8.6%. The concentrations of trans-10,cis-12 CLA and cis-9,trans-11 CLA in milk fat was 309 and 33.4% higher in ewes fed CLA. Pronounced milk fat depression coupled with the deleterious effects on milk yield, milk SCC, and secretion of all milk solids observed in ewes fed an unprotected CLA supplement is likely to be associated with high doses of trans-10,cis-12 CLA reaching the mammary gland, corroborating previous results obtained with dairy cows. 650 $aGlândula Mamaria 653 $aDepressão de gordura do leite 653 $aOvelha lacaune 653 $aProdução de leite 700 1 $aGAMA, M. A. S. da 700 1 $aFERNANDES, D. 700 1 $aTEDESCHI, L. O. 700 1 $aBAUMAN, D. E. 773 $tJournal of Dairy Science$gv. 95, n. 3, p. 1437-1446, 2012.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|